JQ Tire Chrome plated screw bolt Auto tire anti-theft screw wheel screw nut 98-03609 712-601

1. Material requirements: The material of the wheel nut should meet national standards, and the common ones are high strength alloy steel and stainless steel. High strength alloy steel has high tensile strength and yield strength, which can meet the requirements of use in a variety of harsh environments.

2. Size requirements: The size of the hub nut should meet the requirements of the national standard and the vehicle manufacturer, including the diameter, thickness, thread aperture and other parameters of the nut. These dimensional parameters should ensure that the nut is properly installed on the hub and that the connection is tight and stable.
3. Heat treatment requirements: After heat treatment of automobile hub screws and wheel screws, their performance grade should not be less than 8.8, and the hardness value should meet the provisions of relevant national standards. After heat treatment, the performance grade of the wheel nut should not be less than 8, and the hardness value should also meet the corresponding national standards.